While WEBP is developed to make web-browsing of image intense sites faster, it is interesting
because it introduces a new open-sourced and free lossless compression that outperforms
.PNG and animated .GIF and it may be capable to replace both formats one day.
This is our chance for a free image format in such a way FLAC is free for lossless audio.
On my tests, WEBP 0.3.1 compresses 24-bit RGB like JPEG2000 and on palette images it
is worse than PNG.
WEBP also is much slower than JPEG, GIF and PNG in encoding and decoding
and it compresses not good enough to my taste. While no one would donate them his own
lossless image codec to just become famous, I want to ask our professionals here:
What would you change to make WEBP faster or improve lossless compression?